Churning composite foundation of quality assurance. Churning composite foundation is not connected by a plurality of rotating spray pile components. Rotary spray when its subject is a certain diameter and shape of the jet grouting piles, there are some even in jet grouting pile outside support body, support body is due to cracks caused by the soil, the number, weight (thickness) and the length of the soil fissure conditions and technical parameters of the jet. That triple tube sealing curtain pile, composite foundation not only Jet Churning Pile in the soil between the pile there are several branches Consolidation body double pipe sealing curtain rig, they improved to a certain extent physical and mechanical properties of soil between piles, thereby increasing the bearing capacity of composite foundation pile seal curtain picture, reducing the settlement of the foundation. Because of the high-speed jet stream is a high-energy focused and continuous action on the soil, stress and erosion and other factors always occur at the same time effect of intensive stress in the region. Thus, with the impact of the jet cutting and destruction of soil and soil slurry mixing functions.